Başköy is a neighborhood in Orhaneli District, in Bursa Province, Türkiye. Başköy lies at 710 m above sea level, in the Uludağ mountains. It has 254 inhabitants. The nearest city is Görükle, 19.4 km to the north. Among the landmarks around are Grand Mosque of Bursa (24 km), Orhan Gazi Mosque (24 km) and Apollonia ad Rhyndacum (19.6 km). Among the natural features are Ayvaini Cave (13.7 km).